Probably no single test, even the sensitive immunoassays, can be expected to adequately reflect thyroid status under all circumstances. Among possible problems are the recovery phase of nonthyroidal illness, states of resistance to thyroid hormone, thyrotropin-producing tumors, thyroid status in acute ...
hyperthyroidism TSHoma THR Consider T4, Free, Direct Dialysis (TC 35167) to rule out assay interference from binding proteins Consider referral to endocrinologist TC, test code; THR, thyroid hormone resistance; TPO, thyroid peroxidase antibodies; TSH, thyroid stimulating hormone; TSHoma, thyrotropin...
While the TRα isoforms are expressed predominantly in brain, heart, skeletal muscle and adipose tissues, the TRβ isoform is expressed in liver, heart and pituitary, and mediates the regulation of cholesterol metabolism, as well as the feedback regulation of Thyrotropin-Stimulating Hormone (TSH) ...